Titlebar buttons are actually bad. The titlebar exists (or existed) for a reason, so you'd have somewhere you could grab to manipulate the window. Now it's kind of a guessing game with every app on where you can grab without causing the app to do something you didn't want.
If that's a problem for you, you have much to gain with better window management shortcuts. On KDE I have the Windows key + left click set to drag a window from anywhere, and win + right click to resize depending on the quadrant the cursor is on. It's incredibly satisfying not having to hunt titlebar empty spaces or thin edges.